Worst thing happening is to have to let gassses out in class AND having diarrhea and the bathroom.... welp XD
I once had to take a poop so badly, but the toilets in school were so disgusting, so I tried to hold it in, and in the middle of a lesson, I let out like a 5 second fart and everybody was just staring at me and I felt so uncomfortable I couldn't take control and let another one rip. Oh boy.